After a dedicated block storage cluster is created, you can create disks in the dedicated block storage cluster. The method used to create system disks in a dedicated block storage cluster is different from that used to create data disks. This topic describes how to create disks in a dedicated block storage cluster in different scenarios.

Background information

Note Dedicated Block Storage Cluster is available in the China (Heyuan), Indonesia (Jakarta), and China South 1 Finance regions.
Disks in a dedicated block storage cluster are exclusively reserved for your use and are physically isolated from other disks in the public cloud. Take note of the following items:
  • The category of disks that are available for a dedicated block storage cluster depends on the cluster type. Only enhanced SSDs at performance level 0 (PL0 ESSDs) can be created in basic dedicated block storage clusters. Only enhanced SSDs at performance level 1 (PL1 ESSDs) can be created in performance dedicated block storage clusters.
  • Both system disks and data disks can be created in dedicated block storage clusters, but in different ways. For more information, see the following sections:

Create a system disk in a dedicated block storage cluster

If you want to create the system disk for an Elastic Compute Service (ECS) instance in a dedicated block storage cluster, you must enable Dedicated Block Storage Cluster when you create the instance.
Note Only pay-as-you-go instances support Dedicated Block Storage Cluster. Make sure to set Billing Method to Pay-As-You-Go when you create the instance.
  1. Log on to the ECS console.
  2. In the left-side navigation pane, choose Instances & Images > Instances.
  3. In the top navigation bar, select a region.
    The instance must be created within the same region as the dedicated block storage cluster that you want to use.
  4. Click Create Instance.
  5. Enable Dedicated Block Storage Cluster.
    For more information about how to create an instance, see Create an instance by using the wizard. Take note of the following parameters:
    • Billing Method: Select Pay-As-You-Go.
    • Region: Select the region and zone to which the dedicated block storage cluster belongs.
    • Dedicated Block Storage Cluster: Select Enable Dedicated Block Storage Cluster and select the dedicated block storage cluster in which to create the system disk.
    After the instance is created, the system disk of the instance belongs to the selected dedicated block storage cluster.

Create a data disk in a dedicated block storage cluster

You can use one of the following methods to create a data disk in a dedicated block storage cluster:
  • Method 1: Enable Dedicated Block Storage Cluster when you create an instance

    If you enable Dedicated Block Storage Cluster when you create an instance, the system disk and data disks of the instance automatically belong to the dedicated block storage cluster that you selected. For more information, see Create a system disk in a dedicated block storage cluster.
    For example, when you create an instance, you enable Dedicated Block Storage Cluster and specify a system disk (as shown in Section ① of the following figure) and a data disk (as shown in Section ② of the following figure). After the instance is created, the system disk and data disk of the instance automatically belong to the dedicated block storage cluster that you selected. Data disks
  • Method 2: Create a data disk in a dedicated block storage cluster

  1. Go to the Dedicated Block Storage Cluster page.
    1. Log on to the ECS console.
    2. In the left-side navigation pane, choose Storage & Snapshots > Dedicated Block Storage Cluster.
    3. In the top navigation bar, select a region.
  2. Find the dedicated block storage cluster in which you want to create a data disk and click Create Disk in the Actions column.
  3. On the Create Disk page, configure the parameters described in the following table:
    Parameter Description
    Region Select the region and zone to which the dedicated block storage cluster that you want to use belongs.
    Dedicated Block Storage Cluster By default, Dedicated Block Storage Cluster is enabled. If Dedicated Block Storage Cluster is not enabled, select Enable Dedicated Block Storage Cluster.

    If Dedicated Block Storage Cluster is enabled and multiple dedicated block storage clusters belong to the selected region and zone, select the dedicated block storage cluster that you want to use from the dedicated block storage cluster list.

    Storage Select PL0 ESSDs if the type of your dedicated block storage cluster is Basic, or select PL1 ESSDs if the type of your dedicated block storage cluster is Performance.
    Quantity Specify the number of disks that you want to create.
    Note
    • When you create disks, take note of the number of data disks on the instance to which you want to attach the disks. The number of data disks that can be attached to an ECS instance is limited. For more information, see the "Elastic Block Storage (EBS) limits" section in Limits.
    • Pay-as-you-go disks have capacity quotas. The total capacity that you purchase cannot exceed the capacity quota. You can use the following formula to calculate the total disk capacity: Total capacity = Capacity of a single disk × Number of disks. After you configure the disk category, the purchased capacity and the remaining capacity are displayed on the Disk page.
    Terms of Service Read and select ECS Terms of Service.
    Others (Optional) Configure the Disk Name, Description, Tags, and Resource Group parameters.
  4. Click Preview. After you verify disk information in the Preview message, click Create.
    After the disk is created, you can view the disk information in the dedicated block storage cluster that you selected. For more information, see View the information of a dedicated block storage cluster.

What to do next

If you perform the operations described in Method 2 to create a disk in a dedicated block storage cluster, you must attach the disk to an instance within the same zone and format the disk before the disk can be used.
  1. Attach the disk to a specified instance.

    For more information, see Attach a data disk.

  2. Log on to the instance and format the disk.

    For more information, see Partition and format a data disk on a Linux instance or Partition and format a data disk on a Windows instance.